A reason why you would use this guide could be that you are hosting your domain in the 2tCloud platform and have bought services you want to migrate to in the future. Until you are ready to switch to our services you can only disable the DNS record.
Log in to the Customer Control Panel
Click on 'More Services'
Click 'Hosted Domains'
Click on the domain you want to enable/disable DNS records in
Within the Hosted Domain open the DNS tab
Within the DNS tab go to DNS Records
Open the DNS record you wish to enable/disable
Click on Activate record or Deactivate record to respectively enable or disable the DNS record.